我的Angular4应用程序突然出现问题，我收到以下错误消息：
GET http://degould-login.dev/node_modules/rxjs/operators.js 404 (Not Found)
我不确定它为什么突然出现，我在包或核心架构中没有改变任何可能导致此问题的内容。
我可以看到'operator'js'文件不存在于npm：rxjs文件夹中，但我不知道是在请求它。
我的System.JS文件
/**
* System configuration for Angular 2 samples
* Adjust as necessary for your application needs.
*/
(function (global) {
System.config({
paths: {
// paths serve as alias
'npm:': 'node_modules/'
},
// map tells the System loader where to look for things
map: {
// our app is within the app folder
app: 'app',
// angular bundles
'@angular/animations': 'node_modules/@angular/animations/bundles/animations.umd.min.js',
'@angular/animations/browser':'node_modules/@angular/animations/bundles/animations-browser.umd.js',
'@angular/platform-browser/animations': 'node_modules/@angular/platform-browser/bundles/platform-browser-animations.umd.js',
'@angular/core': 'npm:@angular/core/bundles/core.umd.js',
'@angular/common': 'npm:@angular/common/bundles/common.umd.js',
'@angular/compiler': 'npm:@angular/compiler/bundles/compiler.umd.js',
'@angular/platform-browser': 'npm:@angular/platform-browser/bundles/platform-browser.umd.js',
'@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic/bundles/platform-browser-dynamic.umd.js',
'@angular/http': 'npm:@angular/http/bundles/http.umd.js',
'@angular/router': 'npm:@angular/router/bundles/router.umd.js',
'@angular/forms': 'npm:@angular/forms/bundles/forms.umd.js',
// other libraries
'rxjs' : 'npm:rxjs',
'@ngrx' : 'node_modules/@ngrx',
'angular2-jwt' : 'node_modules/angular2-jwt',
'd3' : 'npm:d3',
'ng2-charts' : 'npm:ng2-charts',
'chart.js' : 'npm:chart.js',
'@agm/core' : 'npm:@agm'
},
// packages tells the System loader how to load when no filename and/or no extension
packages: {
app: {
main: './main.js',
defaultExtension: 'js'
},
'rxjs': {
defaultExtension: 'js'
},
'@ngrx/store': {
main: 'bundles/store.umd.js',
format: 'cjs'
},
'@ngrx/core': {
main: 'bundles/core.umd.js',
format: 'cjs'
},
'@ngrx/store-devtools': {
main: 'bundles/store-devtools.umd.js',
format: 'cjs'
},
'angular2-jwt': {
main: 'angular2-jwt.js',
format: 'js'
},
'd3': {
main: 'build/d3.js',
defaultExtension: 'js'
},
'ng2-charts': {
main: 'bundles/ng2-charts.umd.js',
defaultExtension: 'js'
},
'chart.js': {
main: 'dist/Chart.bundle.js',
defaultExtension: 'js'
},
'@agm/core': {
main: 'core/core.umd.js',
defaultExtension: 'js'
}
}
});
})(this);
和我的package.json
{
"name": "degould-dashboard-frontend",
"version": "1.0.0",
"scripts": {
"start": "tsc && concurrently \"npm run tsc:w\" \"npm run build-css-watch\"",
"build": "tsc",
"tsc:w": "tsc -w",
"build-css": "node-sass --include-path scss assets/css -o app/assets/css",
"build-css-watch": "node-sass --include-path scss assets/css -wo app/assets/css",
"test": "concurrently \"tsc -w\" \"karma start karma.conf.js\"",
"testnotsc": "karma start karma.conf.js"
},
"license": "ISC",
"dependencies": {
"@agm/core": "^1.0.0-beta.1",
"@angular/animations": "^4.2.4",
"@angular/common": "^4.2.4",
"@angular/compiler": "^4.2.4",
"@angular/core": "^4.2.4",
"@angular/forms": "^4.2.4",
"@angular/http": "^4.2.4",
"@angular/platform-browser": "^4.2.4",
"@angular/platform-browser-dynamic": "^4.2.4",
"@angular/platform-server": "4.0.0",
"@angular/router": "^4.2.4",
"@angularclass/conventions-loader": "^1.0.2",
"@angularclass/hmr": "~1.2.2",
"@angularclass/hmr-loader": "~3.0.2",
"@ngrx/core": "^1.2.0",
"@ngrx/store": "^2.2.1",
"@ngrx/store-devtools": "^3.2.4",
"@types/chart.js": "^2.6.1",
"angular-2-local-storage": "^1.0.1",
"angular2-jwt": "^0.2.3",
"bootstrap": "^3.3.7",
"chart.js": "^2.6.0",
"core-js": "^2.4.1",
"d3": "^4.10.0",
"heatmap.js": "^2.0.5",
"jquery": "^3.2.1",
"moment": "^2.18.1",
"ng2-charts": "^1.6.0",
"redux": "^3.6.0",
"reflect-metadata": "^0.1.3",
"rxjs": "^5.5.2",
"sass": "^0.5.0",
"systemjs": "0.19.39",
"tether": "^1.4.0",
"toastr-ng2": "^4.1.1",
"weather-icons": "^1.3.2",
"zone.js": "^0.8.4"
},
"devDependencies": {
"@angular/compiler-cli": "2.4.6",
"@types/d3": "^4.10.0",
"@types/jasmine": "^2.5.36",
"concurrently": "^2.2.0",
"gulp": "^3.9.1",
"gulp-coffee": "latest",
"gulp-concat": "latest",
"gulp-connect": "latest",
"gulp-sass": "latest",
"gulp-typescript": "^3.0.2",
"gulp-uglify": "latest",
"gulp-useref": "^3.1.2",
"gulp-util": "latest",
"jasmine-core": "~2.4.1",
"karma": "^1.3.0",
"karma-chrome-launcher": "^2.0.0",
"karma-cli": "^1.0.1",
"karma-jasmine": "^1.0.2",
"karma-jasmine-html-reporter": "^0.2.2",
"protractor": "^4.0.9",
"typescript": "2.4.1",
"typings": "^1.3.2"
}
}
有谁知道为什么我会收到此错误？我重新安装了我的npm软件包，我也手动重新安装了rxjs。
由于
答案 0 :(得分：-1)
我从package.json看到你有angular / cli。你在用它吗？
如果是这样，常见的帖子表明angular / cli不需要systemjs。你有这个原因有什么特别的原因吗？
如果这是最初的systemjs，现在是angular / cli，请参阅Move project from SystemJS to Angular CLI / Webpack
如果你想保留systemjs，直接解决问题，
我注意到GET http://degould-login.dev/node_modules/rxjs/operators.js - rxjs包中没有operators.js，其中有一个运营商文件夹。
所以这可能与导入声明有一个流氓＆＃39; .js＆＃39;？
答案 1 :(得分：-1)
当我回答另一个问题时（使用Plunker＆amp; SystemJs），这个错误突然出现。
这是在Plunker上运行的systemjs.config.js rxjs映射条目。请注意，订单可能很重要。
// other libraries
'rxjs/operators': 'npm:rxjs@5.5.2/operators/index.js',
'rxjs': 'npm:rxjs@5.5.2',